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bfq: fix compile error if CONFIG_CGROUPS=n

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If we don't have CGROUPS enabled, the compile ends in the
following misery:

In file included from ../block/bfq-iosched.c:105:0:
../block/bfq-iosched.h:819:22: error: array type has incomplete element type
 extern struct cftype bfq_blkcg_legacy_files[];
                      ^
../block/bfq-iosched.h:820:22: error: array type has incomplete element type
 extern struct cftype bfq_blkg_files[];
                      ^

Move the declarations under the right ifdef.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2017-04-20 09:37:05 -06:00
commit 659b3394eb
1 changed files with 2 additions and 3 deletions
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5
block/bfq-iosched.h
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@ -816,9 +816,6 @@ void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg);
/* ---------------- cgroups-support interface ---------------- */
extern struct cftype bfq_blkcg_legacy_files[];
extern struct cftype bfq_blkg_files[];
void bfqg_stats_update_io_add(struct bfq_group *bfqg, struct bfq_queue *bfqq,
unsigned int op);
void bfqg_stats_update_io_remove(struct bfq_group *bfqg, unsigned int op);
@ -844,6 +841,8 @@ struct bfq_group *bfq_create_group_hierarchy(struct bfq_data *bfqd, int node);
void bfqg_put(struct bfq_group *bfqg);
#ifdef CONFIG_BFQ_GROUP_IOSCHED
extern struct cftype bfq_blkcg_legacy_files[];
extern struct cftype bfq_blkg_files[];
extern struct blkcg_policy blkcg_policy_bfq;
#endif